Abstract:
Various embodiments of the present invention provide systems and methods for estimating noise components in a received signal set. For example, one embodiment of the present invention provides a noise estimation circuit that includes a data detector circuit and a noise component calculation circuit. The data detector circuit receives a series of data samples and provides a detected output, and the noise component calculation circuit provides an electronics noise power output and a media noise power output each calculated based at least in part on the detected output and the series of data samples.
Abstract:
A method for detecting a data sequence includes generating a first sample stream, which is a time-sequenced digital signal associated with samples of an analog signal. The first sample stream is interpolated to generate a second sample stream with a different phase. The first sample stream is equalized to generate a first equalized sample stream. The second sample stream is equalized to generate a second equalized sample stream. The first and second equalized sample streams are processed to estimate the second equalized sample stream. The first equalized sample stream is filtered to generate a first set of noise sample streams. The estimated second equalized sample stream is filtered to generate a second set of noise sample streams. The first set and the second set of noise sample streams are diversity combined to generate a set of combined noise sample streams. A data sequence is detected using the combined noise sample streams.